Operation - DeWalt DCS551 Original Instructions Manual

Installing and Removing the Bit
(Fig. 1)
This tool is designed for spiral cutting bits with either
a 3.2 mm (1/8") or 6.4 mm (1/4") shank and has a
tool-free bit change system. To change bits, FIRST
turn off the tool and disconnect the battery from the
tool. Remove the depth guide (b).
1. To replace bit, depress both spindle lock (f) and
collet lock (e) and turn collet grip anti-clockwise.
2. Insert or remove bit.
WARNING: The bits are sharp and
should be handled with great care.
CAUTION: When replacing bits, do not
insert cutting flutes into the collet. This
may result in broken bits.
CAUTION: Bit could be hot due to
cutting process.
3. While depressing both spindle and collet locks,
turn the collet grip clockwise to firmly tighten the
collet. For some heavy duty applications, it may
be necessary to use a wrench to further tighten
the nut (d) while depressing the spindle lock (f).
4. Attach guide.
CAUTION: Never tighten the collet
without a bit installed.
This tool comes with both 3.2 mm (1/8") and
6.4 mm (1/4") collets. To change collets, remove the
collet nut and insert the desired collet.
Depth Guide (Fig. 1)
Depth guide (b) snaps onto locators as shown. Keep
depth guide in place at all times during operation
of the tool. For best results, adjust the guide using
knob (c) to allow the bit to protrude about 3.2 mm
(1/8") past the material to be cut.

OPERATION

Instructions for Use
WARNING: Do not run the power
tool while carrying it at your side.
Accidental contact with the spinning
accessory could snag your clothing,
pulling the accessory into your body.
WARNING: Always observe the safety
instructions and applicable regulations.
WARNING: To reduce the risk of
serious personal injury, turn tool
off and disconnect battery pack
before making any adjustments or
removing/installing attachments or
accessories. An accidental start-up
can cause injury.
Proper Hand Position (fi g. 3)
WARNING: To reduce the risk of
serious personal injury, ALWAYS use
proper hand position as shown.
WARNING: To reduce the risk of
serious personal injury, ALWAYS hold
securely in anticipation of a sudden
reaction.
Proper hand position requires both hands on the
main handle.
To Maintain Safe Tool Control
• Make sure the work surface is free of nails
or screws. Cutting into a nail or screw may
cause the tool to jump, damaging the bit.
• Never operate the tool with one hand while
holding the workpiece with the other hand.
Always clamp the material and guide the tool
with both hands.
• Do not cut material lying on a hard surface.
Clearance behind material to be cut must be
allowed for protruding bit.
• Disconnect battery from tool before making
adjustments, changing bits, or cleaning tool.
• Do not start the tool with bit engaged in
the material. The bit may grab the material.
• Never use the appliance with damage
accessories (bit). Damaged accessories could
break apart.
Switch (Fig. 1)
To start the motor, press the ON/OFF switch (a)
through the tool. To stop the motor, press the switch
back the opposite direction.
Cutting a Hole for an Electrical Outlet
(Fig. 3)
WARNING: Shut off all live electric
circuits to any areas where cut-outs will
be made.
1. Push any wiring deeply into the outlet box to
avoid damage from the cutting bit.
ENGLISH
35